/branches/network/kernel/genarch/src/drivers/ns16550/ns16550.c |
---|
0,0 → 1,115 |
/* |
* Copyright (c) 2009 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup genarch |
* @{ |
*/ |
/** |
* @file |
* @brief NS 16550 serial controller driver. |
*/ |
#include <genarch/drivers/ns16550/ns16550.h> |
#include <ddi/irq.h> |
#include <arch/asm.h> |
#include <console/chardev.h> |
#include <mm/slab.h> |
#include <ddi/device.h> |
#define LSR_DATA_READY 0x01 |
static indev_operations_t kbrdin_ops = { |
.poll = NULL |
}; |
static irq_ownership_t ns16550_claim(irq_t *irq) |
{ |
ns16550_instance_t *instance = irq->instance; |
ns16550_t *dev = instance->ns16550; |
if (pio_read_8(&dev->lsr) & LSR_DATA_READY) |
return IRQ_ACCEPT; |
else |
return IRQ_DECLINE; |
} |
static void ns16550_irq_handler(irq_t *irq) |
{ |
ns16550_instance_t *instance = irq->instance; |
ns16550_t *dev = instance->ns16550; |
if (pio_read_8(&dev->lsr) & LSR_DATA_READY) { |
uint8_t x = pio_read_8(&dev->rbr); |
indev_push_character(&instance->kbrdin, x); |
} |
} |
/** Initialize ns16550. |
* |
* @param dev Addrress of the beginning of the device in I/O space. |
* @param devno Device number. |
* @param inr Interrupt number. |
* @param cir Clear interrupt function. |
* @param cir_arg First argument to cir. |
* |
* @return Keyboard device pointer or NULL on failure. |
* |
*/ |
indev_t *ns16550_init(ns16550_t *dev, inr_t inr, cir_t cir, void *cir_arg) |
{ |
ns16550_instance_t *instance |
= malloc(sizeof(ns16550_instance_t), FRAME_ATOMIC); |
if (!instance) |
return NULL; |
indev_initialize("ns16550", &instance->kbrdin, &kbrdin_ops); |
instance->ns16550 = dev; |
irq_initialize(&instance->irq); |
instance->irq.devno = device_assign_devno(); |
instance->irq.inr = inr; |
instance->irq.claim = ns16550_claim; |
instance->irq.handler = ns16550_irq_handler; |
instance->irq.instance = instance; |
instance->irq.cir = cir; |
instance->irq.cir_arg = cir_arg; |
irq_register(&instance->irq); |
while ((pio_read_8(&dev->lsr) & LSR_DATA_READY)) |
(void) pio_read_8(&dev->rbr); |
/* Enable interrupts */ |
pio_write_8(&dev->ier, IER_ERBFI); |
pio_write_8(&dev->mcr, MCR_OUT2); |
return &instance->kbrdin; |
} |
/** @} |
*/ |
Property changes: |
Added: svn:mergeinfo |
/branches/network/kernel/genarch/src/drivers/dsrln/dsrlnin.c |
---|
0,0 → 1,83 |
/* |
* Copyright (c) 2009 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup genarch |
* @{ |
*/ |
/** |
* @file |
* @brief Dummy serial line input. |
*/ |
#include <genarch/drivers/dsrln/dsrlnin.h> |
#include <console/chardev.h> |
#include <mm/slab.h> |
#include <arch/asm.h> |
#include <ddi/device.h> |
static indev_operations_t kbrdin_ops = { |
.poll = NULL |
}; |
static irq_ownership_t dsrlnin_claim(irq_t *irq) |
{ |
return IRQ_ACCEPT; |
} |
static void dsrlnin_irq_handler(irq_t *irq) |
{ |
dsrlnin_instance_t *instance = irq->instance; |
dsrlnin_t *dev = instance->dsrlnin; |
indev_push_character(&instance->kbrdin, pio_read_8(&dev->data)); |
} |
indev_t *dsrlnin_init(dsrlnin_t *dev, inr_t inr) |
{ |
dsrlnin_instance_t *instance |
= malloc(sizeof(dsrlnin_instance_t), FRAME_ATOMIC); |
if (!instance) |
return NULL; |
indev_initialize("dsrlnin", &instance->kbrdin, &kbrdin_ops); |
instance->dsrlnin = dev; |
irq_initialize(&instance->irq); |
instance->irq.devno = device_assign_devno(); |
instance->irq.inr = inr; |
instance->irq.claim = dsrlnin_claim; |
instance->irq.handler = dsrlnin_irq_handler; |
instance->irq.instance = instance; |
irq_register(&instance->irq); |
return &instance->kbrdin; |
} |
/** @} |
*/ |
/branches/network/kernel/genarch/src/drivers/dsrln/dsrlnout.c |
---|
0,0 → 1,71 |
/* |
* Copyright (c) 2009 Martin Decky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup genarch |
* @{ |
*/ |
/** |
* @file |
* @brief Dummy serial line output. |
*/ |
#include <genarch/drivers/dsrln/dsrlnout.h> |
#include <console/chardev.h> |
#include <arch/asm.h> |
#include <console/console.h> |
#include <sysinfo/sysinfo.h> |
static ioport8_t *dsrlnout_base; |
static void dsrlnout_putchar(outdev_t *dev __attribute__((unused)), const char ch, bool silent) |
{ |
if (!silent) |
pio_write_8(dsrlnout_base, ch); |
} |
static outdev_t dsrlnout_console; |
static outdev_operations_t dsrlnout_ops = { |
.write = dsrlnout_putchar |
}; |
void dsrlnout_init(ioport8_t *base) |
{ |
/* Initialize the software structure. */ |
dsrlnout_base = base; |
outdev_initialize("dsrlnout", &dsrlnout_console, &dsrlnout_ops); |
stdout = &dsrlnout_console; |
sysinfo_set_item_val("fb", NULL, true); |
sysinfo_set_item_val("fb.kind", NULL, 3); |
sysinfo_set_item_val("fb.address.physical", NULL, KA2PA(base)); |
} |
/** @} |
*/ |
/branches/network/kernel/genarch/src/drivers/i8042/i8042.c |
---|
0,0 → 1,109 |
/* |
* Copyright (c) 2009 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup genarch |
* @{ |
*/ |
/** |
* @file |
* @brief i8042 processor driver |
* |
* It takes care of the i8042 serial communication. |
*/ |
#include <genarch/drivers/i8042/i8042.h> |
#include <genarch/drivers/legacy/ia32/io.h> |
#include <arch/asm.h> |
#include <console/chardev.h> |
#include <mm/slab.h> |
#include <ddi/device.h> |
static indev_operations_t kbrdin_ops = { |
.poll = NULL |
}; |
#define i8042_SET_COMMAND 0x60 |
#define i8042_COMMAND 0x69 |
#define i8042_BUFFER_FULL_MASK 0x01 |
#define i8042_WAIT_MASK 0x02 |
static irq_ownership_t i8042_claim(irq_t *irq) |
{ |
i8042_instance_t *i8042_instance = irq->instance; |
i8042_t *dev = i8042_instance->i8042; |
if (pio_read_8(&dev->status) & i8042_BUFFER_FULL_MASK) |
return IRQ_ACCEPT; |
else |
return IRQ_DECLINE; |
} |
static void i8042_irq_handler(irq_t *irq) |
{ |
i8042_instance_t *instance = irq->instance; |
i8042_t *dev = instance->i8042; |
uint8_t status; |
if (((status = pio_read_8(&dev->status)) & i8042_BUFFER_FULL_MASK)) { |
uint8_t data = pio_read_8(&dev->data); |
indev_push_character(&instance->kbrdin, data); |
} |
} |
/** Initialize i8042. */ |
indev_t *i8042_init(i8042_t *dev, inr_t inr) |
{ |
i8042_instance_t *instance |
= malloc(sizeof(i8042_instance_t), FRAME_ATOMIC); |
if (!instance) |
return NULL; |
indev_initialize("i8042", &instance->kbrdin, &kbrdin_ops); |
instance->i8042 = dev; |
irq_initialize(&instance->irq); |
instance->irq.devno = device_assign_devno(); |
instance->irq.inr = inr; |
instance->irq.claim = i8042_claim; |
instance->irq.handler = i8042_irq_handler; |
instance->irq.instance = instance; |
irq_register(&instance->irq); |
/* |
* Clear input buffer. |
*/ |
while (pio_read_8(&dev->status) & i8042_BUFFER_FULL_MASK) |
(void) pio_read_8(&dev->data); |
return &instance->kbrdin; |
} |
/** @} |
*/ |
Property changes: |
Added: svn:mergeinfo |
/branches/network/kernel/genarch/src/drivers/z8530/z8530.c |
---|
0,0 → 1,133 |
/* |
* Copyright (c) 2009 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup genarch |
* @{ |
*/ |
/** |
* @file |
* @brief Zilog 8530 serial controller driver. |
*/ |
#include <genarch/drivers/z8530/z8530.h> |
#include <console/chardev.h> |
#include <ddi/irq.h> |
#include <arch/asm.h> |
#include <mm/slab.h> |
#include <ddi/device.h> |
static indev_operations_t kbrdin_ops = { |
.poll = NULL |
}; |
static inline void z8530_write(ioport8_t *ctl, uint8_t reg, uint8_t val) |
{ |
/* |
* Registers 8-15 will automatically issue the Point High |
* command as their bit 3 is 1. |
*/ |
pio_write_8(ctl, reg); /* Select register */ |
pio_write_8(ctl, val); /* Write value */ |
} |
static inline uint8_t z8530_read(ioport8_t *ctl, uint8_t reg) |
{ |
/* |
* Registers 8-15 will automatically issue the Point High |
* command as their bit 3 is 1. |
*/ |
pio_write_8(ctl, reg); /* Select register */ |
return pio_read_8(ctl); |
} |
static irq_ownership_t z8530_claim(irq_t *irq) |
{ |
z8530_instance_t *instance = irq->instance; |
z8530_t *dev = instance->z8530; |
if (z8530_read(&dev->ctl_a, RR0) & RR0_RCA) |
return IRQ_ACCEPT; |
else |
return IRQ_DECLINE; |
} |
static void z8530_irq_handler(irq_t *irq) |
{ |
z8530_instance_t *instance = irq->instance; |
z8530_t *dev = instance->z8530; |
if (z8530_read(&dev->ctl_a, RR0) & RR0_RCA) { |
uint8_t x = z8530_read(&dev->ctl_a, RR8); |
indev_push_character(&instance->kbrdin, x); |
} |
} |
/** Initialize z8530. */ |
indev_t *z8530_init(z8530_t *dev, inr_t inr, cir_t cir, void *cir_arg) |
{ |
z8530_instance_t *instance |
= malloc(sizeof(z8530_instance_t), FRAME_ATOMIC); |
if (!instance) |
return false; |
indev_initialize("z8530", &instance->kbrdin, &kbrdin_ops); |
instance->z8530 = dev; |
irq_initialize(&instance->irq); |
instance->irq.devno = device_assign_devno(); |
instance->irq.inr = inr; |
instance->irq.claim = z8530_claim; |
instance->irq.handler = z8530_irq_handler; |
instance->irq.instance = instance; |
instance->irq.cir = cir; |
instance->irq.cir_arg = cir_arg; |
irq_register(&instance->irq); |
(void) z8530_read(&dev->ctl_a, RR8); |
/* |
* Clear any pending TX interrupts or we never manage |
* to set FHC UART interrupt state to idle. |
*/ |
z8530_write(&dev->ctl_a, WR0, WR0_TX_IP_RST); |
/* interrupt on all characters */ |
z8530_write(&dev->ctl_a, WR1, WR1_IARCSC); |
/* 8 bits per character and enable receiver */ |
z8530_write(&dev->ctl_a, WR3, WR3_RX8BITSCH | WR3_RX_ENABLE); |
/* Master Interrupt Enable. */ |
z8530_write(&dev->ctl_a, WR9, WR9_MIE); |
return &instance->kbrdin; |
} |
/** @} |
*/ |
Property changes: |
Added: svn:mergeinfo |
/branches/network/kernel/genarch/src/drivers/ega/ega.c |
---|
0,0 → 1,206 |
/* |
* Copyright (c) 2001-2004 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup genarch_drivers |
* @{ |
*/ |
/** |
* @file |
* @brief EGA driver. |
*/ |
#include <genarch/drivers/ega/ega.h> |
#include <putchar.h> |
#include <mm/page.h> |
#include <mm/as.h> |
#include <mm/slab.h> |
#include <arch/mm/page.h> |
#include <synch/spinlock.h> |
#include <arch/types.h> |
#include <arch/asm.h> |
#include <memstr.h> |
#include <console/chardev.h> |
#include <console/console.h> |
#include <sysinfo/sysinfo.h> |
#include <ddi/ddi.h> |
/* |
* The EGA driver. |
* Simple and short. Function for displaying characters and "scrolling". |
*/ |
SPINLOCK_INITIALIZE(egalock); |
static uint32_t ega_cursor; |
static uint8_t *videoram; |
static uint8_t *backbuf; |
static ioport8_t *ega_base; |
#define SPACE 0x20 |
#define STYLE 0x07 |
#define EMPTY_CHAR (STYLE << 8 | SPACE) |
/* |
* This function takes care of scrolling. |
*/ |
static void ega_check_cursor(void) |
{ |
if (ega_cursor < EGA_SCREEN) |
return; |
memmove((void *) videoram, (void *) (videoram + EGA_COLS * 2), |
(EGA_SCREEN - EGA_COLS) * 2); |
memmove((void *) backbuf, (void *) (backbuf + EGA_COLS * 2), |
(EGA_SCREEN - EGA_COLS) * 2); |
memsetw(videoram + (EGA_SCREEN - EGA_COLS) * 2, EGA_COLS, EMPTY_CHAR); |
memsetw(backbuf + (EGA_SCREEN - EGA_COLS) * 2, EGA_COLS, EMPTY_CHAR); |
ega_cursor = ega_cursor - EGA_COLS; |
} |
static void ega_show_cursor(void) |
{ |
pio_write_8(ega_base + EGA_INDEX_REG, 0x0a); |
uint8_t stat = pio_read_8(ega_base + EGA_DATA_REG); |
pio_write_8(ega_base + EGA_INDEX_REG, 0x0a); |
pio_write_8(ega_base + EGA_DATA_REG, stat & (~(1 << 5))); |
} |
static void ega_move_cursor(void) |
{ |
pio_write_8(ega_base + EGA_INDEX_REG, 0x0e); |
pio_write_8(ega_base + EGA_DATA_REG, (uint8_t) ((ega_cursor >> 8) & 0xff)); |
pio_write_8(ega_base + EGA_INDEX_REG, 0x0f); |
pio_write_8(ega_base + EGA_DATA_REG, (uint8_t) (ega_cursor & 0xff)); |
} |
static void ega_sync_cursor(void) |
{ |
pio_write_8(ega_base + EGA_INDEX_REG, 0x0e); |
uint8_t hi = pio_read_8(ega_base + EGA_DATA_REG); |
pio_write_8(ega_base + EGA_INDEX_REG, 0x0f); |
uint8_t lo = pio_read_8(ega_base + EGA_DATA_REG); |
ega_cursor = (hi << 8) | lo; |
if (ega_cursor >= EGA_SCREEN) |
ega_cursor = 0; |
if ((ega_cursor % EGA_COLS) != 0) |
ega_cursor = (ega_cursor + EGA_COLS) - ega_cursor % EGA_COLS; |
memsetw(videoram + ega_cursor * 2, EGA_SCREEN - ega_cursor, EMPTY_CHAR); |
memsetw(backbuf + ega_cursor * 2, EGA_SCREEN - ega_cursor, EMPTY_CHAR); |
ega_check_cursor(); |
ega_move_cursor(); |
ega_show_cursor(); |
} |
static void ega_display_char(char ch, bool silent) |
{ |
backbuf[ega_cursor * 2] = ch; |
backbuf[ega_cursor * 2 + 1] = STYLE; |
if (!silent) { |
videoram[ega_cursor * 2] = ch; |
videoram[ega_cursor * 2 + 1] = STYLE; |
} |
} |
static void ega_putchar(outdev_t *dev __attribute__((unused)), const char ch, bool silent) |
{ |
ipl_t ipl; |
ipl = interrupts_disable(); |
spinlock_lock(&egalock); |
switch (ch) { |
case '\n': |
ega_cursor = (ega_cursor + EGA_COLS) - ega_cursor % EGA_COLS; |
break; |
case '\t': |
ega_cursor = (ega_cursor + 8) - ega_cursor % 8; |
break; |
case '\b': |
if (ega_cursor % EGA_COLS) |
ega_cursor--; |
break; |
default: |
ega_display_char(ch, silent); |
ega_cursor++; |
break; |
} |
ega_check_cursor(); |
if (!silent) |
ega_move_cursor(); |
spinlock_unlock(&egalock); |
interrupts_restore(ipl); |
} |
static outdev_t ega_console; |
static outdev_operations_t ega_ops = { |
.write = ega_putchar |
}; |
void ega_init(ioport8_t *base, uintptr_t videoram_phys) |
{ |
/* Initialize the software structure. */ |
ega_base = base; |
backbuf = (uint8_t *) malloc(EGA_VRAM_SIZE, 0); |
if (!backbuf) |
panic("Unable to allocate backbuffer."); |
videoram = (uint8_t *) hw_map(videoram_phys, EGA_VRAM_SIZE); |
/* Synchronize the back buffer and cursor position. */ |
memcpy(backbuf, videoram, EGA_VRAM_SIZE); |
ega_sync_cursor(); |
outdev_initialize("ega", &ega_console, &ega_ops); |
stdout = &ega_console; |
sysinfo_set_item_val("fb", NULL, true); |
sysinfo_set_item_val("fb.kind", NULL, 2); |
sysinfo_set_item_val("fb.width", NULL, EGA_COLS); |
sysinfo_set_item_val("fb.height", NULL, EGA_ROWS); |
sysinfo_set_item_val("fb.blinking", NULL, true); |
sysinfo_set_item_val("fb.address.physical", NULL, videoram_phys); |
} |
void ega_redraw(void) |
{ |
memcpy(videoram, backbuf, EGA_VRAM_SIZE); |
ega_move_cursor(); |
ega_show_cursor(); |
} |
/** @} |
*/ |
Property changes: |
Added: svn:mergeinfo |